Michael foleyj of



M. FOLEY.

Scrll-Sawing Machines.

Patented Oct. 21,1873.

r. w w V w ArnN'r OFFICE.

MICHAEL FOLEY, OF APPLETON, WISCONSIN.

IMPROVEMENT IN SCROLL'SAWIN'G MACHINES.

Specifieation for'mng part of Letters Patent No. 143,895, dated October21, 1873; application filed June 13, 1873.

To all whom 'it may concert:

Be it known that I, MICHAEL FoLEY, of Appleton, in the county ofOutagamie and State of Wisconsin, have invented a new and usefulImprovement in Scroll-Saws, 850.; and I hereby declare the following tobe a full, clear, and exact description of the same, reference being hadto the accompanying,` drawing mal;- ing a part of this speciication, inwhich Figure 1 is a side elevation, partially in section, of a machineembodying' my improvements; and Fig'. 2 is a Vertical section of theslide therein used for regulating the tension of the saws.

The invention consists in the construction and arrangement of a hangingframe provided with three slides working in ways, two of the slidesbeing connected by a belt which runs over two pulleys, one above each ofsaid two slides, and under a third pulley fixed to the third slide,which is located intermediately between the two other slides,andprovided with a lever and ratchet to'niove the pulley to and retainit at any required elevation; and two saws, secured at their upper endsto the two connected slides, and at their' lower ends to two slidesworking in ways on the under side of a table, which is secured to thefioor and provided with a shaft having` a crankwheel fixed to each endthereof in such a manner that the crank-pins are at opposite points onthe crank-wheels, which latter are connected to the lower slides bypitmen.

In the accompanying` drawing, the ceiling is represented by A, and thefloor by B. Two hangers orposts, O, strengthened by brace-rods, supportthe hanging frame E, whichis provided with slides F, F', and G, working'in ways H, H', and I. A belt, J, which runs over pulleys K and K' andunder a pulley, L, connects the slides F and F' The slide G is locatedintermediately between the slides F and Fl, and provided with a lever,M, and a ratchet, N, used to move the pulley L to and retain it at anyrequired elevation in the ways I. Two saws, O and O', are secured attheir upper ends to the slides F and IW, and at their lower ends toslides P and P', working in ways Q, Q' secured to' the under side of thetable R, which is secured to the fioor B, and

provided with a shaft, S, having the erankwheels T T' the pins U U' ofwhich are placed at opposite points on the crank-wheels. Pitmen V V'connect the crank-wheels T T' with the slides I? P' The shaft Sis-provided with a fixed pulley, IV, and a loose pulley, W'. The saws OOl pass through openings X X' in the table R.

When it is desired to use but one saw, a rod may be substtuted foreither O or O'. By this substitution the tension of the remaining sawcan be regulated as readily as if both saws were used.

The tension is rcgulatcd as follows: The tension is increased bydepressing the lever M, which presses the pulley L upon the belt J andcauses the strain upon the belt and the saws to be equal. Elevating thelever M consequently cliniinishes the tension.

The crai'ik-pins U U' being at opposite points on the crank-wheels T T/that is to say, one being up and the other down-a revolution of theshaft S causes one saw to ascend while the other descends.

This improvement is equally applicable' to scroll-saws or to muleys.

Havin'g thus described my invention, what I claim as new and useful, anddesire to secure by Letters Patent, is

In combination, the hanging frame E, provided with the pulleys K K',slides F, Fl, and G, the latter having pulley L, lever'M, and ratchet N,the belt J, saws O O', slides P I, pitmen V V', and shaft S providedwith crankwheels T T', constructed and Operating substantially as andfor the purposes hereinbefore set forth.

In testimony that I claim the foregoing I have hereunto set my hand this15th day of May, 187 3.

MICHAEL FOLEY.

Vitnesses:

EDGAR M. PRATT, ZnLorns O. FAIRBANKs.

